Larry, the most direct route to get to Mayport Naval Station from I-95 will be 26 miles (east on Atlantic Blvd/State Rd 10 for 21 miles, then north on Mayport Rd for 5 miles). You will have to allow a minimum of 35-45 minutes to travel that route as it passes thru some busy & congested areas of town. Let me know what you decide.